Home / 100,505.16-138,696.52-55,183.96

Finding the Fourth Proportional to 100,505.16, 138,696.52 and 55,183.96

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Solution

The fourth proportional to 100,505.16, 138,696.52 and 55,183.96 is: 76,153.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,505.16 : 138,696.52 = 55,183.96 : x
  2. Step 2: Convert to fraction form
    100,505.16/138,696.52 = 55,183.96/x
  3. Step 3: Cross multiply
    100,505.16x = 138,696.52 × 55,183.96
  4. Step 4: Simplify right side
    100,505.16x = 7,653,823,211.82
  5. Step 5: Solve for x
    x = 7,653,823,211.82/100,505.16
  6. Step 6: Final answer
    x = 76,153.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.